Serialized Data Buffer

Code

#include <stdio.h>
#include <stdint.h>

void build_packet(uint8_t command, uint16_t value, uint8_t status, uint32_t checksum) {
    uint8_t buffer[10];
    buffer[0]= 0xA5;
    buffer[1]= command;
    buffer[3]= 0xFF & (value>>8);
    buffer[2]= 0xFF & (value);
    buffer[4]= status;
    buffer[8]= 0xFF & (checksum>>24);
    buffer[7]= 0xFF & (checksum>>16);
    buffer[6]= 0xFF & (checksum>>8);
    buffer[5]= 0xFF & (checksum>>0);
    buffer[9]= 0x5A;
    // Your logic to fill buffer
    // Then print buffer
    for(int i=0;i<10;i++){
        printf("%d ",buffer[i]);
    }
}

int main() {
    uint8_t cmd, status;
    uint16_t val;
    uint32_t crc;

    scanf("%hhu %hu %hhu %u", &cmd, &val, &status, &crc);
    build_packet(cmd, val, status, crc);
    return 0;
}

Solving Approach